Depositor for plastic materials



April 14,1925. 1,5?,359'1V R. S. HISLOP DEPOSITO!! FOR PLASTIC MATERIALSsnea .mnu s, 1924 x l 1 g gf I I /W ya /M l y 36 L25 .Eg-24- PatentedApr, 14, 1925.

UNITED if`ia'l`fi''ES PATENT FFICE.

ROBERT SCOTT HISLOPOF RACINE, W'ISCONSIN, ASSIGNOR-TO RACINE GONFEl-,TIONEBS MACHINERY COlWIPANY, OF RACINE, WISCGNSIN.

DEPOSITOR PLASTTC MATERIALS.

Application filed June 5,

To @ZZ whom 'it may concern.'

Be it known that I, Bonner Sco'rr llisLor, a citizen ot the UnitedStates, residing at Racine, county ot Racine, State of VVisoonsin, haveinvented a certain new and i'ise'tul In'iprovement in Depositors forPlastic Materials, ot which the following is a spec1- lisation,reference being had therein to the accompanying` drawings.

rlhis invention relates especially, although not exclusively, tomachines oic the general type shown and described in the patent to.

Denier-ath, No. 791,611, June 6, 1905,l and employed in the manufactureof confectionery and the like for the purpose ot depositinp; .n'ieasuredquantities ot plastic material, such as chocolate, cream compos1- tions,ete. The invention has tor its object to provide mechanism or thisgeneral character adapted Jfor use in connection with plastic materialscontainingtraits, nut meats, raisins and other solid substances whichare likely to be crushed by depositingl devices ot the type newgenerally in use.

lThe more particular objects ot' the invention, together with meanswhereby the saine may be carried into effect, will best be understoodtrom the following,r description oft one term or embodiment thereofillustrated in the accompanying drawings. It will be understood,however. y that the particular construction described and shown has beenchosen tor illustrative purposes merely, and that the invention, vasdefined by the claims hereunto appended, may be lotherwise ein bodiedwithout departure from its spirit and scope.

ln said drawings:

Fig. l is a side elevation et a machine for forming; depositedconiections and employing' depositing' mechanism embodyingthe invention.

Figs. 2 and 3 are enlarged sections ot the depositor, sliowingthe partsin dilierent positions.

Fig. l is a side elevation the measuring valve. l

.ln l is shown confectionery Inachine .in whose traine l is journalled amain shait ll carrying` a belt pulley l2 through which power trom anysuitable source is applied to the machine. Rotatably supported at tbeends of the machine are drums, one ot which is shown at 13, about whichpasses an endless conveyor belt 14, the upper reach ot -a portion ot1924. Serial No. 718,009.

anisin (not shown) operated through a cony neetinp; rod :from a crankdislr 2l on a shatt- 22 provided with a gear 23 meshing` with the gear18. The parts above referred to are not shown in `tull herein and willnot be turther described since they form no portion ot the presentinvention and may be oi any` construction and arrangement well known inthe art. f i

Supported by uprigbts 2st from the traine l0, above the upper reach oitthe conveyor belt lel. is the depositor to which the .present inventionrelates and which is adapted to deposit measured quantities ot plasticmaterial upon the upper reach oit said belt, or upon suitable trayscarried thereby, between the successive movements o'lj' the belt and asthe upperreach oit the latter islifted into proximity to saiddcpositorby the table l5 and cani 16.- v

Supported by the uprights 9.4. isa reservoir or hopper adapted tocontain the mass ot plastic material, said reservoir having'. an. outletin the form ot `one or more nozzles 26 carried by or termed Aintegralwith a plate 27 between which and the reservoir is interposed thecasing' 28 of a measuring' valve adapted to control the pass sagre otthe material from the reservoir to the nozzles. .f i

The incasuring` valve comprises an oscillatin?,` sleeve 29substantially7 fitting; the interior of the valve casing,- Q8 and formedwith one or .more recesses 30 correspondingI in number and arrangementto the nozzles 2(5,said recesses beine,l adapted, as the sleeveoscillated, to communicate with the bottom ot the reservoir 25 `or withthe nozzles Q6. Journalled in the sleeve 29 is anoscile latini; shattlhaving one or more radial plungers 3Q, operatingy in the recesses` 30 inSaid plungers as herein the sleeve 29V. shown comprise bladesV or ribsseated in grooves in the shaft and secured in place by screws 38;

The mechanism for operating the measur ingy valve is indica-ted by thenumeral 34 in Fig. l and is actuated by a pitman 35 'from the crank disk21. ThisI mechanism isnot shown in detail herein and may be substancoitially as shoivny and described in the Dem erath patent above referredto. For the purpose of the present description it is suflicient tosaythat the sleeve 29 is oscillated to bring the recess 30 alternately intocommunication with the reservoir 25 and nozzle 26, and that the shaft 31is also periodically oscillated to cause a relative movement of theplunger 32 in said recess between the end Walls of the latter, wherebymeasured quantities of. plastic material are alternately drawn from thereservoir into the recess anda and crushedk thereby. ln accordance withthe present invention, however, one or bothv of these faces isrelievedto provide a pocket of constant volume into which solid substances solodged are received so as to prevent their being crushed in this manner.As shown, the end *walls of the recess S0 are formed with cylindricalgrooves 36 which are closed by the opposed faces 'of the plunger 32 whenthe latter reaches its limits of movement with respect to said` recess,While one of the faces of said kplunger is also formed With a similarand opposed cylindrical= groove 37. A solid mass, such as a nut meat ora piece of fruit, caught between the plunger and the end of the recessduring the expulsion of the plastic material from the latter merelyenters the pocket 3G, or the pockets 36 and 37, forcing out an equalamount of vplastic material, and is not crushed. Since a constantquantity of material is at all times retained in the pocket-s, theaccurate measurement of the quantities deposited is not affected.

Having thus described my invention, I

claim:

l. A depositor for plastic material comprising a reservoir for thematerial, a valve casing communicating with said reservoir andhaving anoutletthrough which said material is deposited, a measuring valve insaid casing for discharging measured quantitles of said mate-rialthrough said outlet, said valve. including a member having a recess to,receive measured quantities of the material froml said reservoir, and aplunger' operating in saidA recess to expel said' inaterial therefrom,and means Afor operating said valve,I said.. parts being constructed andarranged to provide a pocket of constantvolume: between thev wall ofsaid recess and the opposed face. of said plunger when the latterreaches its llimit of movementwith respect to the former.

2.7111 a depositor for plastic materia-l, a valve casing, a: valvemember therein, said valve member having a recess, and av second valemember having, a plunger operating in said recess to` expeli thematerial therefrom, one offsaidr members being-relieved to form a pocketbetween the Wall of said recess. and the opposed face ofsaid plungerwhen the latter reaches its limit of movementivith respect to theLformer.

3. ln a depositor for plastic material, a valve casing, a valve membertherein, said valve member having'- ay recess, and a second valve memberhaving a plunger operating in said recess to expely the materialtherefrom, said recess andi plunger' having opposed faces which. arebrought substantially into engagement with one another at the limits of.movement of said plunger with rcspect to said recess, the face-s of'oner of said members being provided with. poche-ts.

el.. In a depositor for plastic material, a valve casing, a valve membertherein, said valve men'rber having recess the end Walls of which areprovided: with grooves, and plunger movable in said: recess to expel'-the material therefrom.

5. n a depositor for plastic material, a

casing, an oscillating sleeve therein, saidy sleeve having a recess,andl an oscillating shaft in said sleeve having a radiallydisposedplunger in said. recess, one of said parts having a pocket to receive aconstant quantity of` said material at the limits of movement of saidplunger With'respect to said recess.

G. In a depositor for plastic material, a casing, an oscillating sleevetherein, said sleeve having a recessthe end Walls of, which are providedWith substantially cylindrical grooves, and an oscillating shaft in saidsleeve having a radially disposed plunger operating in said recess.

lntestimony whereof II aflix my signature.

ROBERT SCOTT HISLOP.

